PCN: cross fertile?

As I was cleaning up a flowerbed I found a clump of seedlings, maybe
thirty or so, that grew from a neglected seedpod from my sole PCN
iris. I moved them to a large pot and spread them out to let them
mature. my question is, what can i expect from them? While I only
have one PCN, it is growing in the near vicinity of several styles of
siberiens. Are PCN's cross fertile with sibs? or should I expect
the offspring to be from self-pollination? Any estimate on when to
expect to see blooms? Just curious. Any input is appreciated as I
have no experience with PCN's at all.
Thanks!
Mike U.
Olympia, WA
Still sunny and dry, but slightly cooler this week. Sure could use
some rain!
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